[tip:perf/core] perf vendor events intel: Add uncore_upi JSON support

tip-bot for Kan Liang
2019-05-18T08:59:56Z

Commit-ID: bf6d18cffa5f26bd5dc71485c2a2ad0c42a0ce60
Gitweb: https://git.kernel.org/tip/bf6d18cffa5f26bd5dc71485c2a2ad0c42a0ce60
Author: Kan Liang <kan.liang@linux.intel.com>
AuthorDate: Tue, 7 May 2019 06:16:31 -0700
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 15 May 2019 16:36:47 -0300

perf vendor events intel: Add uncore_upi JSON support

Perf cannot parse UPI (Intel's "Ultra Path Interconnect" [1]) events.

# perf stat -e UPI_DATA_BANDWIDTH_TX
event syntax error: 'UPI_DATA_BANDWIDTH_TX'
\___ parser error
Run 'perf list' for a list of valid events

The JSON lists call the box UPI LL, while perf calls it upi. Add
conversion support to JSON to convert the unit properly.

Committer notes:

[1] https://en.wikipedia.org/wiki/Intel_Ultra_Path_Interconnect

"The Intel Ultra Path Interconnect (UPI) is a point-to-point processor
interconnect developed by Intel which replaced the Intel QuickPath
Interconnect (QPI) in Xeon Skylake-SP platforms starting in 2017.

UPI is a low-latency coherent interconnect for scalable multiprocessor
systems with a shared address space. It uses a directory-based home
snoop coherency protocol with a transfer speed of up to 10.4 GT/s.
Supporting processors typically have two or three UPI links."

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1557234991-130456-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/pmu-events/jevents.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 68c92bb599ee..daaea5003d4a 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -235,6 +235,7 @@ static struct map {
{ "iMPH-U", "uncore_arb" },
{ "CPU-M-CF", "cpum_cf" },
{ "CPU-M-SF", "cpum_sf" },
+ { "UPI LL", "uncore_upi" },
{}
};